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Hearing range. Hearing range describes the frequency range that can be heard by humans or other animals, though it can also refer to the range of levels. The human range is commonly given as 20 to 20,000 Hz, although there is considerable variation between individuals, especially at high frequencies, and a gradual loss of sensitivity to higher ...
Perception of infrasound. Infrasound is sound at frequencies lower than the low frequency end of human hearing threshold at 20 Hz. It is known, however, that humans can perceive sounds below this frequency at very high pressure levels. [ 1] Infrasound can come from many natural as well as man-made sources, including weather patterns ...
Arctic fox. The Arctic fox ( Vulpes lagopus ), also known as the white fox, polar fox, or snow fox, is a small species of fox native to the Arctic regions of the Northern Hemisphere and common throughout the Arctic tundra biome. [ 1][ 8][ 9][ 10] It is well adapted to living in cold environments, and is best known for its thick, warm fur that ...
Ultrasound. An ultrasonic examination. Ultrasound is sound with frequencies greater than 20 kilohertz. [ 1] This frequency is the approximate upper audible limit of human hearing in healthy young adults. The physical principles of acoustic waves apply to any frequency range, including ultrasound. Ultrasonic devices operate with frequencies from ...
t. e. An audio frequency or audible frequency ( AF) is a periodic vibration whose frequency is audible to the average human. The SI unit of frequency is the hertz (Hz). It is the property of sound that most determines pitch. [ 1] The generally accepted standard hearing range for humans is 20 to 20,000 Hz. [ 2][ 3][ 4] In air at atmospheric ...
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Audiogram. An audiogram is a graph that shows the audible threshold for standardized frequencies as measured by an audiometer. The Y axis represents intensity measured in decibels (dB) and the X axis represents frequency measured in hertz (Hz). [1] The threshold of hearing is plotted relative to a standardised curve that represents 'normal ...
Human Hearing vs. Animal Hearing When it comes to hearing abilities, humans are no match for some animals. For instance, dolphins, bats, and owls have some of the best hearing in the animal kingdom.